Calibration calculator



FIG. 1 is a top plan view of a calibration calculator showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a right, front, and top perspective view thereof. 

The ornamental design for a calibration calculator, as shown. 